:root {
  --primary-color: #4a90e2;
  --secondary-color: #f5f5f5;
  --border-color: #e0e0e0;
  --text-color: #333;
  --success-color: #4caf50;
}

body {
  width: 480px;
  margin: 0;
  padding: 20px;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text-color);
}

.container {
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

header {
  display: flex;
  align-items: center;
  padding: 15px 20px;
  border-bottom: 1px solid var(--border-color);
}

.logo {
  width: 32px;
  height: 32px;
  margin-right: 12px;
}

h1 {
  font-size: 18px;
  margin: 0;
  color: var(--primary-color);
}

.tab-container {
  padding: 20px;
}

.tab-buttons {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.tab-btn {
  padding: 8px 16px;
  border: none;
  background: var(--secondary-color);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s;
}

.tab-btn.active {
  background: var(--primary-color);
  color: white;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.upload-area {
  border: 2px dashed var(--border-color);
  border-radius: 8px;
  padding: 30px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s;
}

.upload-area:hover {
  border-color: var(--primary-color);
}

.upload-icon {
  font-size: 32px;
  margin-bottom: 10px;
}

.result-area {
  margin-top: 20px;
}

.result-box {
  min-height: 100px;
  padding: 15px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  margin: 10px 0;
  background: var(--secondary-color);
}

.shipping-form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

input {
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 14px;
}

.action-btn {
  background: var(--primary-color);
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s;
}

.action-btn:hover {
  opacity: 0.9;
}

.exchange-rate-container {
  padding: 15px;
  width: 300px;
}

.rate-input, .rate-output {
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
}

input, select {
  padding: 5px;
  border: 1px solid #ddd;
  border-radius: 4px;
}

#amount {
  width: 100px;
} 